1228 	struct semaphore *sem = NULL;  in acpi_os_create_semaphore()  local
1230 	sem = acpi_os_allocate_zeroed(sizeof(struct semaphore));  in acpi_os_create_semaphore()
1231 	if (!sem)  in acpi_os_create_semaphore()
1234 	sema_init(sem, initial_units);  in acpi_os_create_semaphore()
1236 	*handle = (acpi_handle *) sem;  in acpi_os_create_semaphore()
1253 	struct semaphore *sem = (struct semaphore *)handle;  in acpi_os_delete_semaphore()  local
1255 	if (!sem)  in acpi_os_delete_semaphore()
1260 	BUG_ON(!list_empty(&sem->wait_list));  in acpi_os_delete_semaphore()
1261 	kfree(sem);  in acpi_os_delete_semaphore()
1262 	sem = NULL;  in acpi_os_delete_semaphore()
1273 	struct semaphore *sem = (struct semaphore *)handle;  in acpi_os_wait_semaphore()  local
1280 	if (!sem || (units < 1))  in acpi_os_wait_semaphore()
1294 	ret = down_timeout(sem, jiffies);  in acpi_os_wait_semaphore()
1317 	struct semaphore *sem = (struct semaphore *)handle;  in acpi_os_signal_semaphore()  local
1322 	if (!sem || (units < 1))  in acpi_os_signal_semaphore()
1331 	up(sem);  in acpi_os_signal_semaphore()